Appendix G: Construction Inspection Checklists and ...

APPENDIX G: CONSTRUCTION

INSPECTION CHECKLISTS AND

CERTIFICATION TEMPLATES

Contents

Generic Certification Letter Template for Stormwater Management Facilities ...... 3

Construction Inspection Checklist: Bioretention ...................................................... 4

Construction Inspection Checklist: Urban Bioretention ¨CPlanter Box ..................... 7

Construction Inspection Checklist: Urban Bioretention ¨CTree Filter ..................... 10

Construction Inspection Checklist: Permeable Pavement ..................................... 13

Construction Inspection Checklist: Infiltration Trench ........................................... 16

Construction Inspection Checklist: Dry Well .......................................................... 18

Construction Inspection Checklist: Dry Swale ........................................................ 20

Construction Inspection Checklist: Rooftop Disconnection ................................... 23

Construction Inspection Checklist: Green / Vegetated Roof.................................. 25

Certification Letter for Rainwater Harvesting ........................................................ 27

Certification Letter for Proprietary BMP ................................................................ 28

Certification Letter for Water Quantity Control (Detention) Facility ..................... 29

March 2020

y

Review of Certifications for Stormwater Management Facilities

Projects that require Civil Engineering Plan submission

Projects that are site plans, use permit, form based code, by-right and any project that disturbs more than

1 acre, are required to submit a Certification Letter Template for Stormwater Management Facilities (page

2) in addition to record drawings, construction inspection checklists, material tickets, and photographs of

installation of any stormwater management facility constructed. These submittals should be included

in the as-built plan submitted for the project through the online portal:

?



Projects that require VA DEQ Construction General Permit (disturbs greater than 1 acre)

Projects with VA DEQ Construction General Permits are required to submit Certification Letter Template

for Stormwater Management Facilities (see page 2), construction inspection checklist, material tickets,

photographs of installation for any stormwater management facility constructed. In addition, include the

VA DEQ Construction General Permit Notice of Termination paperwork in your submission prior to

submitting to VA DEQ.

Projects that require Civil Engineering Plan submission

Civil Engineering Projects are required to submit a Certification Letter (or Certification Letter Template if

project has a CGP) in addition to record drawings, construction inspection checklists, material tickets, and

photographs of installation of any stormwater management facility constructed. These submittals should

be included in the as-built plan submitted for the project through the online portal:

. Review of the submittals will occur as part of the as-built plan

review.

Review of the submittals will occur as part of the as-built plan review.

Small projects including single family residences built separately:

Small projectsare required to submit construction inspection checklist, material tickets, and photographs

of installation for any stormwater management facility constructed. They are not required to submit a

Certification Letter Template for Stormwater Management Facilities or record drawings but must submit a

Certification Letter for the stormwater management facilities. Include final house location survey plat or

red-lined/as-built plan sheet showing locations of all stormwater management facilities installed during the

project.

Please submit entire package in one email: certification letter from professional, construction inspection

checklists, photos, and material delivery tickets to StormwaterReview@arlingtonva.us. All items should

be submitted as a complete package using a file sharing program (i.e., OneDrive) if the total package is

greater than 10MB. Submissions in multiple emails may result in a determination of an incomplete

package.

Please allow at least 10 business days prior to the desired certificate of occupancy (CO) date for the

review of the stormwater management facility certification. It is the customer¡¯s responsibility to plan ahead

to allow sufficient time for this review process. It is also in the customer¡¯s best interest to prepare a

complete, thorough, and accurate certification package. Doing so will shorten the review and approval

process, as outlined below. Otherwise, more than 10 business days may be needed before approval can

occur and the CO issued.

March 2020

Review of the certification documentation for completeness will occur within two (2) business days of

submission. If the documentation is not complete (e.g., missing data on facility dimensions, materials,

construction sequence, etc.), the customer will be notified of the deficiencies at that time. Each

resubmission will be subject to the up to two (2) business day review period for completeness to ensure

fairness to other customers already in the queue with complete documentation submissions.

After documentation is determined to be complete, the package will be reviewed and, if acceptable,

approved, or otherwise comments provided within three (3) additional business days.

Therefore, complete submissions with no deficiencies will take up to five (5) business days for review and

approval.

Please note that each subsequent submission after review will take up to two (2) additional business

days. Again, this is to ensure fairness for all customers in the review process.

March 2020

Certification Letter Template for Stormwater Management Facilities

Company Name

Address

Date

Stormwater Specialist

Department of Environmental Services

2100 Clarendon Blvd

Suite 705

Arlington, VA 22201

RE: Stormwater Management Facility (SWMF) Certification

[PROJECT NAME]

[PROJECT ADDRESS]

Arlington, VA

[BUILDING PERMIT #], [LDA#], [SWM#], [VPDES CONSTRUCTION GENERAL PERMIT#]

Dear Sir or Madam,

A stormwater management facility [INSERT TYPE OF FACILITY] was required as part of the above referenced

project dated [INSERT DATE OF ENGINEER¡¯S STAMP ON APPROVED PLANS].

Pursuant to 9VAC25-870-55 and Arlington County Code Chapter 60-8, I hereby certify that to the best of my knowledge

and belief the stormwater management facilities shown on these record drawings have been constructed in accordance

with the approved plans and specifications.

_________________________

Name

_________________________

Signature

_________________________

Virginia License

_________________________

Date

"Certify means to state or declare a professional opinion based on sufficient and appropriate

onsite inspections, material tests, as-built survey data, and information provided by other

professionals and the contractor, conducted during or after construction.¡±

Enclosures:

1. Record drawings

2. Construction Inspection Checklist

3. Material tickets

4. Photographs during installation

January 2017

Construction Inspection Checklist: Bioretention

Address/

Location:

Building

Permit #:

_____________________________

LDA Permit #: _________________________________

SWM#:

_____________________________

Contractor:

_________________________________

Certifying

Professional*: _________________________________

Telephone:

_____________________________

Telephone:

_____________________________

Final Inspection Date:

_____________________________

Date Started:

_________________________________

__________________________

*Certifying professional must be a licensed Professional Engineer (PE), Landscape Architect (LA), or Land Surveyor (LS).

The following checklist provides a basic outline of the anticipated items for the construction inspection of

bioretention facilities. This checklist does not necessarily distinguish between all the design variations and

differences in construction between the family of practices. Inspectors should review the plans carefully, and

adjust these items and the timing of inspection verification as needed to ensure the intent of the design is met.

The standard for design of this practice is based on Virginia Stormwater BMP Clearinghouse and Arlington County

Stormwater Guidance Manual.

All items should be checked when completed. Items labeled ¡°Certification of¡­¡± must be crossed off,

dated and initialed by certifying inspector.

PRE-CONSTRUCTION MEETING

DATE

Identify the tentative schedule for construction and verify the requirements and schedule for interim

inspections.

All pervious areas of the contributing drainage areas have been adequately stabilized with a thick layer

of vegetation or erosion control measures are still in place and stormwater has been diverted around

the area.

Area of bioretention practice has not been impacted during construction.

Conduct a pre-construction meeting with the contractor designated to install the bioretention, the person

completing this checklist, and the County DES Stormwater Specialist inspector (schedule via

stormwaterreview@arlingtonva.us).

EXCAVATION

DATE

Area of bioretention excavation is marked and the size and location conforms to plan.

If the excavation area has been used as a sediment trap: verify that the bottom elevation of the

proposed stone reservoir is lower than the bottom elevation of the existing trap.

For Level 2 bioretention, ensure the bottom of the excavation is scarified prior to placement of stone.

Subgrade surface is free of rocks and roots, and large voids. Any voids should be refilled with the base

aggregate to create a level surface for the placement of aggregates and underdrain (if required).

No groundwater seepage or standing water is present. Any standing water is dewatered to an

acceptable dewatering device.

Excavation of the bioretention practice has achieved proper grades and the required geometry and

elevations without compacting the bottom of the excavation.

Constructed dimensions: ___________________________

Sides of excavation covered with geotextile; no tears, holes, or excessive wrinkles are present.

Bioretention | March 2020

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